Sona Rebecca Mathew enhanced the EL3-RMM IDE KM interface documentation in the zephyrproject-rtos/trusted-firmware-a repository, focusing on improving clarity and accuracy for developers integrating with this interface. She applied structured technical writing and API documentation best practices using RST, refining descriptions of input and output values for key programming and key set operations. By correcting errors and clarifying failure conditions, Sona reduced the risk of misinterpretation and streamlined troubleshooting. Her work established a clearer onboarding path for downstream teams, leveraging version control and domain knowledge to ensure the documentation supports reliable integration and reduces support overhead for future development efforts.